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All Journal Jurnal Vokasi Mekanika Journal of Innovative and Creativity
Primandari, Sri Rizki
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Education Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Social Sciences Other

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PENGARUH MODEL PEMBELAJARAN PROBLEM BASED INTRUCTION (PBI) BERBANTUAN VIDEO TERHADAP HASIL BELAJAR DASAR TEKNIK PENGELASAN DAN FABRIKASI LOGAM SISWA KELAS X JURUSAN TEKNIK PENGELASAN SMK NEGERI 1 GUGUK Ramadani, Bagus; Ambiyar, Ambiyar; Adri, Junil; Primandari, Sri Rizki
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 4 (2024): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v6i4.746

Abstract

Sustaining and enhancing the quality of education presents a significant challenge. Many education systems face problems such as inappropriate curricula, lack of qualified teachers, and inadequate teaching methods. This study aims to determine the significance of PBI learning materials by video assistance. The subjects of this research were 70 people from SMK Negeri 1 Guguk. Quasi-experimental design, test-sheet research tools, validity, reliability, normalcy, homogeneity, and independent t-tests are the research methods employed. In this study, the experimental class achieved a post-test score of 76.89, compared to 64.49 for the control class. This proves that the treatment given by PBI learning has an impact on academic performance of student in the experimental group were contrasted with those in the group under supervision, who were not given any intervention. As for the outcomes of the normality test wich was carried out, the data obtained a normal distribution value of sig> 0.05, the results of the homogeneity test obtained post-test data greater than (sig>0.05), the variance was homogeneous, and the independent t-test results were obtained at 6.674. then the T Test result is 0.00 in accordance by the provisions of the sig value (2-tailed) <0.05). Consequently, it was determined that the cognitive aspects of students regarding the impact Considering the use of the PBI learning model with video assistance on the learning results of Basic Welding and Metal Fabrication Techniques for Class study control class 64.49 and experimental class 76.89.
Evaluasi Karakteristik Biodiesel dari Minyak Jelantah: Studi Penggunaan Katalis Asam Ilham, Muhammad; Primandari, Sri Rizki; Fernanda, Yolly; Parmanoan, Durain
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.4422

Abstract

Penelitian ini bertujuan untuk mengevaluasi pengaruh variasi suhu dan waktu reaksi terhadap kualitas biodiesel dari minyak jelantah dengan menggunakan katalis asam sulfat (H₂SO₄). Evaluasi dilakukan dengan membandingkan hasil pengujian parameter fisik biodiesel terhadap standar mutu biodiesel SNI 7182:2015. Metode penelitian menggunakan eksperimen laboratorium dengan variasi suhu 50°C, 60°C, dan 70°C, serta waktu reaksi 60, 80, dan 100 menit. Parameter yang diuji meliputi bilangan asam, densitas, dan viskositas. Hasil penelitian menunjukkan bahwa suhu dan waktu reaksi memberikan pengaruh signifikan terhadap kualitas biodiesel yang dihasilkan. Kondisi optimum diperoleh pada suhu 60°C dan waktu reaksi 60 menit, menghasilkan biodiesel dengan bilangan asam 0,561 mg KOH/g, densitas 883,28 kg/m³, dan viskositas 3,007 cSt.. Semua hasil tersebut memenuhi batas mutu biodiesel berdasarkan SNI 7182:2015.
Co-Authors Ambiyar, Ambiyar Fernanda, Yolly Junil Adri Muhammad Ilham Parmanoan, Durain Ramadani, Bagus